Improvement



I. SGHRACK.

Shuttle-Bax Mechanisms.

No. 142,736, I Patented September9,1873.

Z?e Mim mail,

JOHN SOHRAOK, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SHUTTLE-50X MECHANISMS.

Specification forming part of Letters Patent No. 11%23'36, datedSeptember 9, 1873; application filed June 12, 1873.

To all whom it may concern:

Be it known that I, JOHN SGHRAGK, of the city and county ofPhiladelphia, State of Pennsylvania, have invented Mechanism forAdjusting the Shuttles of Looms, of which the following is aspecification:

My invention relates to an improvement in the class of looms commonlyused for weaving narrow fabrics, such as suspenders and ribbons, inwhich the lay carries a number of shuttles arranged in a row for weavinga number of strips of fabric simultaneously, and-in which, when severalcolors are to be used, it is also customary to employ two or more rowsof shuttles capable ofbeing raised and lowered on the lay in order tobring any of them opposite the race. The object of my invention is toautomatically control these shuttles, when two or more rows are used, bymeans of jacquard apparatus; and I attain this object through the mediumof the combination of devices illustrated in the side elevation, Figure1, and transverse section, Fig. 2, of the accompanying drawing, which Iwill nowproceed to describe.

The devices, as illustrated in the drawing, are arranged to control andadjust four rows of shuttles, for which three steps or movements arerequired to change from the lowest to the highest box, or vice versa.(See Fig. 3.) The lay swings from above on a long radius, and occupiesabout the position indicated by the curved dotted line :12, and theshuttle-boxes carried by the same are suspended by cords to from alever, A, which should be at least as high up on the loom as thepivoting-point of the lay, with which the extremity b of the said levershould nearly coincide, so that the vertical positions of theshuttle-boxes, in respect to the race, may not be affected by theircurvilinear movement. The lever A is connected at the extremity of itsrear arm by a cord, 0, to a plate-lever, B, pivoted to the fixed frame Dof the loom at d, limited in its movements by a pin and slot, 0, andhaving three pins, f, f and f which project over the notched ends ofthree bell-crank levers, E, E and E and into the path of the hooked arms9 of three additional bell-crank levers, F, F, and F The bell-cranklevers E have separate fulcrums h, M, and h upon the fixed frame of theloom, are connected at the extremities of their long arms by cords i tojacquard apparatus above, and have notched short arms of difierentlengths projecting upward into the paths of the pins f, f and f of thelever B. The weight of the shuttle-boxes on the lay has a constanttendency to turn the levers A and B upon their fulcrums in the directionof the arrows 1, and to consequently lower the pins f onto the notchedends of the levers E, the latter, when struck by the pins, arresting themovementof the same, and of the levers A and B, and therefore sustainingthe weight of the shuttle-boxes. When the pin f rests upon the lever E,as shown in Fig. 1, the front end of the lever A is raised to its fullextent, and the lowest boxes and shuttles are opposite the race, asindicated in the diagram, Fig. 3. 1f the lever E be turned back from thepin by means of the jacquard apparatus, as indicated by the arrow 2, theshuttle'boxes will drop by their own weight, turning the levers A and Bin the direction of the arrows 1 until the pin f strikes and rests uponthe lever E and the second box is opposite the race, and in like mannerthe pin f and lever E will sustain the levers B and A in proper positionfor retaining the third or next to the highest shuttle opposite therace, the highest shuttle being brought into working position byallowing the levers A and B to drop to the full extent permitted by theslot and stop-pin c.

It is not necessary that these movements should be step by step, asabove described, as any of the boxes may be skipped, and by drawing thewhole of the levers E simultaneously back from the pins f, by means ofthe jacquard apparatus, when the parts are in the position shown in Fig.1, the boxes may be dropped bodily from the lowest to the highestshuttle by one movement.

The mechanism for raising the shuttles is somewhat more complicated, andis as follows: Upon the cam-shaft or bridle-shaft H of the loom (seeFigs. 1 and 2) are three cams, j,j and 3' of different degrees of throw,and upon these cams rest the anti-friction wheels is of three curvedarms, M, M and M all of which have their fulcrums at a point, 70, on the.fixed frame of the loom, and to the outer extremities of the said armsare hung the three bell-crank T .Qrrron.

levers F, F and F before referred to as having hooked arms 9 extendingdownward into the path of the pin f of the plate-lever B. The long armsof the levers F correspond in shape with and rest by their own weightupon the upper edges of their respective arms M, and when thus depressedtheir hooks g are drawn back from the pin j, so that they can rise andfall with the arms M as the latter are vibrated by the cams withoutstriking the said pin f, or causing any movement of the lever B. Thesaid levers F are, however, connected with the jacquard apparatus aboveby cords l, and if any one of the same is elevated, and thus turned uponits fulcrum s by the said jacquard apparatus, its hooked arm g will beimmediately drawn into the path of the pin f, so that when elevated bymeans of its arm M and cam j, the said hook y will strike and lift thepin f, and thus turn the lever B in the direction of the arrow 3 to anextent sufficient to permit one of the bell-crank levers E to fall byits own weight into the path of its proper pin f, so as to retain thelever' and shuttleboxes in position to which they have been adiusted bythe hooked lever F. The whole of the hooks g engage with the single pinf, so that the lever B may be turned by the same.

to the extent required to raise the proper shuttle to a positionopposite the race. For instance, supposing the parts were in a positionexactly the reverse of that shown in Fig. 1, or, in other words, thatthe highest instead of the lowest shuttle box was opposite the "ace, andthat it was desired to bring the next to the highest box opposite therace, the horizontal arm of the lever F would be raised oy means of thejacquard apparatus, in order o turn the lever and bring its hook g,which is the lowest, into the path of the pin f, so that when the saidlever l5 was raised by means of its arm M and cam j, the hook 9 shouldstrike and lift the pin f, and thus turn the lever B in rne direction ofthe arrow 3, and consequently the lever A also to a suflicient extent toraise ment the lever E would turn by its own weight in the direction ofthe arrow 4, and thus bring its upper notched end directly beneath thepin f of the lever B, so that when the lever F was released by thejacquard apparatus, and had fallen to its original position on the arm Mso as to draw back its book 9 from the pin f, the said lever B would besustained in the position to which it had been adjusted by the lever Eand pin f. In like manner the levers F and E would be brought into playto bring the second from the highest boxes into line with the race inraising the said boxes, and the levers F and E, in raising v the boxessufficiently to bring the lowest shut tie into line.

The principal advantages possessed by my invention are that the whole ofthe changes in the position of the shuttles are effected automaticallyby means of the jacquard apparatus, and that any required changes can bemade without loss of time, as any of the boxes can be skipped, asdesired.

The devices described may be duplicated at the opposite ends of the lay,and be arranged to operate simultaneously; but when the lay is short,the said devices arranged at one end of the same only will be foundsuiiicient.

My invention, it will be evident, can be applied to ordinary drop-boxlooms, as well as to those of the character described.

I claim as my invention 1. The combination, substantially as described,of the lever A, from which the dropboxes are suspended, the lever B, itspins f, and the series of levers E,- controlled by jac quard apparatus.

2. The combination of the two series of le vers E and F, controlled byjacquard apparatus, with the lever B and its pins.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN SOHRAGK.

Witnesses:

WM. A. STEEL, HUBERT HowsoN.

